diff --git a/package.json b/package.json
index d43889a..f4e9526 100644
--- a/package.json
+++ b/package.json
@@ -35,20 +35,20 @@
   "devDependencies": {
     "babel-eslint": "^8.0.2",
     "babel-plugin-transform-flow-strip-types": "^6.22.0",
-    "create-universal-package": "^2.0.1",
-    "eslint": "^4.10.0",
+    "create-universal-package": "^2.1.1",
+    "eslint": "^4.11.0",
     "eslint-config-fusion": "^0.1.2",
     "eslint-plugin-cup": "^1.0.0",
     "eslint-plugin-flowtype": "^2.39.1",
     "eslint-plugin-prettier": "^2.3.1",
     "eslint-plugin-react": "^7.4.0",
     "fusion-react": "^0.1.9",
-    "fusion-core": "^0.2.1",
+    "fusion-core": "^0.2.3",
     "fusion-react-async": "0.1.4",
     "prettier": "1.8.2",
-    "react": "^16.1.0",
-    "react-dom": "16.1.0",
-    "react-test-renderer": "^16.1.0",
+    "react": "^16.1.1",
+    "react-dom": "16.1.1",
+    "react-test-renderer": "^16.1.1",
     "tape-cup": "^4.7.1",
     "unitest": "^1.1.0"
   },
diff --git a/yarn.lock b/yarn.lock
index 6e25ace..baf5e0f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -501,7 +501,7 @@ acorn-jsx@^3.0.0:
   dependencies:
     acorn "^3.0.4"
 
-acorn@>=2.5.2, acorn@^5.0.0, acorn@^5.1.1:
+acorn@>=2.5.2, acorn@^5.0.0, acorn@^5.2.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.2.1.tgz#317ac7821826c22c702d66189ab8359675f135d7"
 
@@ -524,7 +524,7 @@ ajv@^4.9.1:
     co "^4.6.0"
     json-stable-stringify "^1.0.1"
 
-ajv@^5.1.0, ajv@^5.1.5, ajv@^5.2.0, ajv@^5.2.3:
+ajv@^5.1.0, ajv@^5.1.5, ajv@^5.2.3, ajv@^5.3.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.3.0.tgz#4414ff74a50879c208ee5fdc826e32c303549eda"
   dependencies:
@@ -640,7 +640,7 @@ array-unique@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.2.1.tgz#a1d97ccafcbc2625cc70fadceb36a50c58b01a53"
 
-arrify@^1.0.0:
+arrify@^1.0.0, arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
 
@@ -704,7 +704,7 @@ aws4@^1.2.1, aws4@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.6.0.tgz#83ef5ca860b2b32e4a0deedee8c771b9db57471e"
 
-babel-code-frame@^6.22.0:
+babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
   dependencies:
@@ -721,6 +721,33 @@ babel-eslint@^8.0.2:
     "@babel/types" "^7.0.0-beta.31"
     babylon "^7.0.0-beta.31"
 
+babel-generator@^6.18.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-generator/-/babel-generator-6.26.0.tgz#ac1ae20070b79f6e3ca1d3269613053774f20dc5"
+  dependencies:
+    babel-messages "^6.23.0"
+    babel-runtime "^6.26.0"
+    babel-types "^6.26.0"
+    detect-indent "^4.0.0"
+    jsesc "^1.3.0"
+    lodash "^4.17.4"
+    source-map "^0.5.6"
+    trim-right "^1.0.1"
+
+babel-messages@^6.23.0:
+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
+  dependencies:
+    babel-runtime "^6.22.0"
+
+babel-plugin-istanbul@^4.1.5:
+  version "4.1.5"
+  resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.5.tgz#6760cdd977f411d3e175bb064f2bc327d99b2b6e"
+  dependencies:
+    find-up "^2.1.0"
+    istanbul-lib-instrument "^1.7.5"
+    test-exclude "^4.1.1"
+
 babel-plugin-syntax-flow@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-flow/-/babel-plugin-syntax-flow-6.18.0.tgz#4c3ab20a2af26aa20cd25995c398c4eb70310c8d"
@@ -743,7 +770,31 @@ babel-runtime@^6.22.0, babel-runtime@^6.26.0:
     core-js "^2.4.0"
     regenerator-runtime "^0.11.0"
 
-babel-types@^6.19.0:
+babel-template@^6.16.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.26.0.tgz#de03e2d16396b069f46dd9fff8521fb1a0e35e02"
+  dependencies:
+    babel-runtime "^6.26.0"
+    babel-traverse "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    lodash "^4.17.4"
+
+babel-traverse@^6.18.0, babel-traverse@^6.26.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-traverse/-/babel-traverse-6.26.0.tgz#46a9cbd7edcc62c8e5c064e2d2d8d0f4035766ee"
+  dependencies:
+    babel-code-frame "^6.26.0"
+    babel-messages "^6.23.0"
+    babel-runtime "^6.26.0"
+    babel-types "^6.26.0"
+    babylon "^6.18.0"
+    debug "^2.6.8"
+    globals "^9.18.0"
+    invariant "^2.2.2"
+    lodash "^4.17.4"
+
+babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
   dependencies:
@@ -756,6 +807,10 @@ babylon@7.0.0-beta.31, babylon@^7.0.0-beta.31:
   version "7.0.0-beta.31"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.31.tgz#7ec10f81e0e456fd0f855ad60fa30c2ac454283f"
 
+babylon@^6.18.0:
+  version "6.18.0"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
+
 backoff@^2.5.0:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/backoff/-/backoff-2.5.0.tgz#f616eda9d3e4b66b8ca7fca79f695722c5f8e26f"
@@ -1172,14 +1227,15 @@ create-hmac@^1.1.0, create-hmac@^1.1.2, create-hmac@^1.1.4:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-create-universal-package@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/create-universal-package/-/create-universal-package-2.0.1.tgz#7695106f5adfe25215051d0ffea2220289bcbe0c"
+create-universal-package@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/create-universal-package/-/create-universal-package-2.1.1.tgz#170877cb6725d8494efb757005eb5aca9ee5edde"
   dependencies:
     "@babel/core" "^7.0.0-beta.31"
     "@babel/preset-stage-3" "^7.0.0-beta.31"
     "@rtsao/babel-preset-env" "^7.0.0-beta.31"
     args "^3.0.7"
+    babel-plugin-istanbul "^4.1.5"
     babel-plugin-transform-cup-globals "^1.0.0"
     chalk "^2.3.0"
     draftlog "^1.0.12"
@@ -1259,7 +1315,7 @@ debug@*, debug@^3.0.1:
   dependencies:
     ms "2.0.0"
 
-debug@2.6.9, debug@^2.1.3, debug@^2.2.0:
+debug@2.6.9, debug@^2.1.3, debug@^2.2.0, debug@^2.6.8:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   dependencies:
@@ -1327,6 +1383,12 @@ destroy@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
 
+detect-indent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
+  dependencies:
+    repeating "^2.0.0"
+
 detect-libc@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.2.tgz#71ad5d204bf17a6a6ca8f450c61454066ef461e1"
@@ -1598,11 +1660,11 @@ eslint-scope@^3.7.1:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-eslint@^4.10.0:
-  version "4.10.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.10.0.tgz#f25d0d7955c81968c2309aa5c9a229e045176bb7"
+eslint@^4.11.0:
+  version "4.11.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.11.0.tgz#39a8c82bc0a3783adf5a39fa27fdd9d36fac9a34"
   dependencies:
-    ajv "^5.2.0"
+    ajv "^5.3.0"
     babel-code-frame "^6.22.0"
     chalk "^2.1.0"
     concat-stream "^1.6.0"
@@ -1610,7 +1672,7 @@ eslint@^4.10.0:
     debug "^3.0.1"
     doctrine "^2.0.0"
     eslint-scope "^3.7.1"
-    espree "^3.5.1"
+    espree "^3.5.2"
     esquery "^1.0.0"
     estraverse "^4.2.0"
     esutils "^2.0.2"
@@ -1623,7 +1685,7 @@ eslint@^4.10.0:
     inquirer "^3.0.6"
     is-resolvable "^1.0.0"
     js-yaml "^3.9.1"
-    json-stable-stringify "^1.0.1"
+    json-stable-stringify-without-jsonify "^1.0.1"
     levn "^0.3.0"
     lodash "^4.17.4"
     minimatch "^3.0.2"
@@ -1640,11 +1702,11 @@ eslint@^4.10.0:
     table "^4.0.1"
     text-table "~0.2.0"
 
-espree@^3.5.1:
-  version "3.5.1"
-  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.1.tgz#0c988b8ab46db53100a1954ae4ba995ddd27d87e"
+espree@^3.5.2:
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.2.tgz#756ada8b979e9dcfcdb30aad8d1a9304a905e1ca"
   dependencies:
-    acorn "^5.1.1"
+    acorn "^5.2.1"
     acorn-jsx "^3.0.0"
 
 esprima@^4.0.0:
@@ -1840,7 +1902,7 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
-find-up@^2.0.0:
+find-up@^2.0.0, find-up@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
   dependencies:
@@ -1949,9 +2011,9 @@ functional-red-black-tree@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
 
-fusion-core@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/fusion-core/-/fusion-core-0.2.1.tgz#6a649d6d17efce19216d92b6715a353d9b14eb4f"
+fusion-core@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/fusion-core/-/fusion-core-0.2.3.tgz#88d51f3198dea341ca7d9538cd6db5888241d6e8"
   dependencies:
     koa "^2.3.0"
     koa-compose "^4.0.0"
@@ -2070,7 +2132,7 @@ globals@^10.0.0:
   version "10.2.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-10.2.0.tgz#69490789091fcaa7f7d512c668c8eb73894a4ef2"
 
-globals@^9.17.0:
+globals@^9.17.0, globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
 
@@ -2524,10 +2586,22 @@ isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
 
-istanbul-lib-coverage@^1.0.1:
+istanbul-lib-coverage@^1.0.1, istanbul-lib-coverage@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.1.tgz#73bfb998885299415c93d38a3e9adf784a77a9da"
 
+istanbul-lib-instrument@^1.7.5:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-1.9.1.tgz#250b30b3531e5d3251299fdd64b0b2c9db6b558e"
+  dependencies:
+    babel-generator "^6.18.0"
+    babel-template "^6.16.0"
+    babel-traverse "^6.18.0"
+    babel-types "^6.18.0"
+    babylon "^6.18.0"
+    istanbul-lib-coverage "^1.1.1"
+    semver "^5.3.0"
+
 jest-docblock@^21.0.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
@@ -2557,6 +2631,10 @@ jschardet@^1.4.2:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/jschardet/-/jschardet-1.6.0.tgz#c7d1a71edcff2839db2f9ec30fc5d5ebd3c1a678"
 
+jsesc@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
+
 jsesc@^2.5.1:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-2.5.1.tgz#e421a2a8e20d6b0819df28908f782526b96dd1fe"
@@ -2577,6 +2655,10 @@ json-schema@0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
 
+json-stable-stringify-without-jsonify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
+
 json-stable-stringify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz#9a759d39c5f2ff503fd5300646ed445f88c4f9af"
@@ -3484,26 +3566,26 @@ rc@^1.1.2, rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-dom@16.1.0:
-  version "16.1.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.1.0.tgz#ab6fd2a285096f388aeba51919a573d06c9bdde4"
+react-dom@16.1.1:
+  version "16.1.1"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.1.1.tgz#b2e331b6d752faf1a2d31399969399a41d8d45f8"
   dependencies:
     fbjs "^0.8.16"
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react-test-renderer@^16.1.0:
-  version "16.1.0"
-  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.1.0.tgz#33a1d3ce896311e0dd1547649b1456ffa7fda415"
+react-test-renderer@^16.1.1:
+  version "16.1.1"
+  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.1.1.tgz#a05184688d564be799f212449262525d1e350537"
   dependencies:
     fbjs "^0.8.16"
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react@^16.1.0:
-  version "16.1.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.1.0.tgz#1c2bdac3c17fe7ee9282fa35aca6cc36387903e1"
+react@^16.1.1:
+  version "16.1.1"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.1.1.tgz#d5c4ef795507e3012282dd51261ff9c0e824fe1f"
   dependencies:
     fbjs "^0.8.16"
     loose-envify "^1.1.0"
@@ -4137,6 +4219,16 @@ tar@^2.2.1:
     fstream "^1.0.2"
     inherits "2"
 
+test-exclude@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.1.1.tgz#4d84964b0966b0087ecc334a2ce002d3d9341e26"
+  dependencies:
+    arrify "^1.0.1"
+    micromatch "^2.3.11"
+    object-assign "^4.1.0"
+    read-pkg-up "^1.0.1"
+    require-main-filename "^1.0.1"
+
 text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"